Báo cáo lâm nghiệp: "Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its effects on cambioxylophagous fauna" docx

Báo cáo lâm nghiệp: "Spatial distribution of four spruce bark beetles in north-western Slovakia" pps

... traps give information influenced by mi-gration of beetles. CONCLUSIONSI. typographus remained dominant species on the majority of sites having high intensity of tree infes-tation mainly along ... understanding of bark beetles spatial distribution. It may be used for practical forest protection only as preliminary information.No environmental factor controlling observed pattern of bark beetles ... Ips typographus L. remained dominant species on majority of sites having high intensity of infestation. Lower altitudes in the south-eastern part of the region were often infested by I. duplicatus...

Báo cáo lâm nghiệp: "Mineral nutrition in relation to the Norway spruce forest decline in the region Horný Spiš (Northern Slovakia)" docx

... Supported by Grant Agency of the Slovak Republic, Project No. 2/4159/04.Mineral nutrition in relation to the Norway spruce forest decline in the region Horný Spiš (Northern Slovakia)Ľ. D1, ... (3): 93–100 97lings from the forest nursery planted in the substrate from the declining forest stand, 6 – spruce seedlings from the nursery planted in the soil substrate from the beech stand).An ... the experiment in which we compared the seedlings planted in the soil with intensive impact of spruce litter and the seedlings planted in the sub-strate from the beech stand (without the in uence...

Báo cáo lâm nghiệp: "Species composition in low mountain beech (Fagus sylvatica L.) stands in the Bieszczady National Park under the global warming" doc

... conditions.SHORT COMMUNICATIONSpecies composition in low mountain beech (Fagus sylvatica L.) stands in the Bieszczady National Park under the global warmingD. S1, R. J1, G. R1, ... in the ﬁr volume and the increase in beech volume was collected.– However, the increasing share of beech, accompa-nied by a decrease in the share of ﬁr, is typical of the natural seedlings’ ... structure in low mountain zone beech forests in the Bieszczady Mountains according to the number of trees (for years: 1993–2003) and compared with dry trees, loss ones and ingrowth treesOthers(Trees/ha)–...

Báo cáo lâm nghiệp: "Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its effects on cambioxylophagous fauna" docx

... chemical thinning consists in the fact that trees killed by chem-ical treatment and left in the stand to their natural Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its eﬀects ... Institute, Brandýs nad Labem, Czech RepublicABSTRACT: Chemical thinning was applied in blue spruce (Picea pungens Engelm.) stands by the application of Roundup Klasik and Garlon 4 EC. e thinning eﬃcacy ... 2008). At present, thinning and re-constructions of these stands are carried out on a large scale. Silvicultural procedures applied in these stands are demanding both economically and tech-nologically....

Báo cáo lâm nghiệp: "Response of the Norway spruce (Picea abies [L.] Karst.) root system to changing humidity and temperature conditions of the sit" ppt

... 6215648902, and the Ministry of Agriculture of the Czech Republic, Project QG 60060.Response of the Norway spruce (Picea abies [L.] Karst.) root system to changing humidity and temperature conditions ... difference in the rooting depth of the whole root system (see Rooting depth of the whole root sys-tem). As the result of disqualification of anchors (due to their rots) the original rooting depth ... causes of the decline of spruce stands in five selected regions of the Czech Republic – from FAVZ 2 to FAVZ 5 in nutrient-rich and acidic sites. With respect to the size of the pa-per and to the...

Báo cáo lâm nghiệp: "Timber harvesting in the ukrainian carpathians: Ecological problems and methods to solve them" ppsx

... us-ing engineering structures and drainage and have rather large longitudinal inclines, which in most cases does not allow using them for the passage of wheeled machinery skidders and tractors ... damage to the bearing surface and soil sampling. Before the beginning of investigations the radius of turns, lengths of linear plots, weight and geometrical parameters of a tractor were determined. ... on the utilization of certain ways of timber cutting and certain systems of machinery. To work out particular principles in detail and to better deﬁne the law, investigations started to deter-mine...

Báo cáo lâm nghiệp: "Multiaged silviculture in North America" potx

... is is increasing the interest in multiaged silviculture in North America as in other regions of the world. An additional factor in uencing current management is the attempts to integrate ... (1965).e southern pine forests in Arkansas have also been a focal point for multiaged silvicultural pro-cedures in the North America. e procedure in these loblolly pine/shortleaf pine forests began ... allocation as a guide in stocking control in multiaged, mixed-conifer forests in southern Finland. Forestry, 74: 171–185.PEARSON G.A., 1942. Improvement selection cutting in ponderosa pine. Journal...

Báo cáo lâm nghiệp: "Available nitrogen in the surface mineral layer of Serbian forest soils" docx

... subtraction of the initial content of available mineral N (for the anaerobic incubation of NH4+-N content); Ninitial‒ initial content of available mineral N (for the anaerobic incubation of NH4+-N ... the mineralization of nitrogen in the sur-face mineral layer of forest soils is diﬀ erent from that in the forest ﬂ oor. Besides, total crop and straw masses are in high correlation with the ... that the in- dices obtained by the process of anaerobic incuba-tion cannot be used to assess mineralizing nitrogen in clearings and arable soils. We also obtained by anaerobic incubation the...

Báo cáo lâm nghiệp: "Seasonal fluctuation in germination of short and longterm stored Norway spruce" ppsx

... characteristics of GE and GC of analysed samples of short- term stored seed (S) and long-term stored seed (L) in the first year (T1) and the second year of testing (T2) Variant N Germination energy (GE %) Germination ... values of germina-tion energy (GE) and germination capacity (GC) in individual months (M = 1, 2, 3 … 12), in total 10 for short- term (S) and long-term stored seed (L) and for testing in the ... question of how the results are affected by possible seasonal effects on germination energy and germination capacity of seeds. To answer this question, fluctuations in germination energy (GE) and germination...

Báo cáo lâm nghiệp: "Nutrients in the aboveground biomass of substitute tree species stand with respect to thinning – blue spruce (Picea pungens Engelm.)" doc

... content in the biomass on the thinned plot represented 8 9–9 2% of the values calculated for the control plot without thinning. On the basis of presented research, which was done within the blue spruce ... years, the investigated substitute blue spruce stand accumulated: N – 336 kg, P – 28 kg, K – 138 kg, Ca – 159 kg, Mg – 28 kg per hectare. Thinning with the consequent removal of aboveground biomass ... 6%.At the age of 22 years, the investigated substitute blue spruce stand without thinning accumulated: N – 336 kg, P – 28 kg, K – 138 kg, Ca – 159 kg, Mg Table 1. Development of aboveground biomass...

Báo cáo lâm nghiệp: "A change in structural diversity and regeneration processes of the spruce virgin forest in Nefcerka NNR (TANAP) in relation to altitude" docx

... diﬀerence in the index was conﬁrmed in the spruce virgin forest in the altitudi-nal range of 1,300–1,400 m.e analysis of the structure of the spruce virgin forest in Nefcerka NNR assessed according ... Education of the Slovak Republic, Project No. 0082-06.A change in structural diversity and regeneration processes of the spruce virgin forest in Nefcerka NNR (TANAP) in relation to altitudeJ. ... 9.3% in the breakdown stage up to 19.1% in the growth stage of the total number of individuals of natural regeneration. e natural regeneration structure of the stud-ied spruce virgin forest Nefcerka...

Báo cáo lâm nghiệp: "Population genetics of Norway spruce (Picea abies Karst.) at regional scale: sensitivity of diﬀerent microsatellite motif classes in detecting diﬀerentiation" pps

... 10.1051/forest:2006029Original articlePopulation genetics of Norway spruce (Picea abies Karst.) at regional scale: sensitivity of different microsatellite motif classes in detecting differentiationIvan Sa,b*, ... type and mutation rate on the resulting pattern of differentiation.A further source of variation in the estimates of genetic dif-ferentiation, besides the use of different marker classes, is rep-resented ... We investigate here the ability of dif-ferent classes of SSR markers to detect differentiation amongpopulations at increasing geographic distances, analysing theeffects of repeat type and mutation...

Báo cáo lâm nghiệp: "Compression stress in opposite wood of angiosperms: observations in chestnut, mani and poplar" ppsx

... involved measurements of RGS and longitudinal drying shrinkage, and were presented in de-tails in previous papers [10, 11]. New data on poplar are also shown,including measurements of RGS and ... contin-uum in behaviour from the “normally” tensile stressed wood to the compression stressed wood. Inside the group of nor-mal wood samples (including compression values), RGS and longitudinal ... 10.1051/forest:2006032Original articleCompression stress in opposite wood of angiosperms: observations in chestnut, mani and poplarBruno Ca,b*, Tancrède Ac, Junji SaaLaboratory of Biomass...

Báo cáo lâm nghiệp: "Eﬀects of soil mechanical treatments combined with bramble and bracken control on the restoration of degraded understory in an ancient beech forest" pptx

... dependent on the initial vegetation type and on soil seed bank composi-tion. We therefore encourage additional experiments in differ-ent stand and soil types in order to establish the generality of these ... on the considered soil parameters. Bothdisc and rotary ploughing induced an overall lowering of soil nutrient index and soil compaction, but different or mitigated in uences on soil moisture and ... implements in an ancient beech forest in central Belgium. The purpose of these investigationswas twofold: (1) to explore whether tillage has a long-lastingeffect on soil compaction and soil moisture,...

Báo cáo lâm nghiệp: "Chemical composition of the periderm in relation to in situ water absorption rates of oak, beech and spruce fine roots" doc

... 763772â INRA, EDP Sciences, 2004DOI: 10.1051/forest:2003071Original articleChemical composition of the periderm in relation to in situ water absorption rates of oak, beech and spruce fine rootsChristoph ... from the terminal root tip in all species. At 500 mmdistance from the tip, periderm thickness had increased to 50 àm in beech and spruce, and to 70 µm in oak. In beech and oak rootlets, the periderm ... needed to show whether oak, beech and spruce indeed differ with respect to drought sensitivity of fine rootgrowth and mortality. Finally, it is necessary to increase the spatial resolution of water...

Xem thêm

Từ khóa: báo cáo lâm nghiệp globalization and its effects on the development of educational service in vietnam cách làm báo cáo tốt nghiệp hướng dẫn làm báo cáo tốt nghiệp khoa kế toán cách làm bìa báo cáo tốt nghiệp cách làm slide báo cáo tốt nghiệp Báo cáo thực tập tại nhà thuốc tại Thành phố Hồ Chí Minh năm 2018 Nghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thống Biện pháp quản lý hoạt động dạy hát xoan trong trường trung học cơ sở huyện lâm thao, phú thọ Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit Phối hợp giữa phòng văn hóa và thông tin với phòng giáo dục và đào tạo trong việc tuyên truyền, giáo dục, vận động xây dựng nông thôn mới huyện thanh thủy, tỉnh phú thọ Trả hồ sơ điều tra bổ sung đối với các tội xâm phạm sở hữu có tính chất chiếm đoạt theo pháp luật Tố tụng hình sự Việt Nam từ thực tiễn thành phố Hồ Chí Minh (Luận văn thạc sĩ)Phát triển du lịch bền vững trên cơ sở bảo vệ môi trường tự nhiên vịnh hạ long Nghiên cứu tổng hợp các oxit hỗn hợp kích thƣớc nanomet ce 0 75 zr0 25o2 , ce 0 5 zr0 5o2 và khảo sát hoạt tính quang xúc tác của chúng Định tội danh từ thực tiễn huyện Cần Giuộc, tỉnh Long An (Luận văn thạc sĩ)Thơ nôm tứ tuyệt trào phúng hồ xuân hương Sở hữu ruộng đất và kinh tế nông nghiệp châu ôn (lạng sơn) nửa đầu thế kỷ XIX Kiểm sát việc giải quyết tố giác, tin báo về tội phạm và kiến nghị khởi tố theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn tỉnh Bình Định (Luận văn thạc sĩ)BT Tieng anh 6 UNIT 2 Tranh tụng tại phiên tòa hình sự sơ thẩm theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn xét xử của các Tòa án quân sự Quân khu (Luận văn thạc sĩ)chuong 1 tong quan quan tri rui ro Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật MÔN TRUYỀN THÔNG MARKETING TÍCH HỢP TÁI CHẾ NHỰA VÀ QUẢN LÝ CHẤT THẢI Ở HOA KỲ